... * Large Displayer with Message Indicators * Accuracy: 0.002pH BANTE922 digital pH Meter used for measuring the acidity, alkalinity and Oxidation-Reduction ... then be sentto a computer via the USB port.Specifications:pH Range: -2.000 to 16.000pHpH Accuracy: ±0.002pHORP ... mm×60(H)mmWeight: 1.7kgMeter Included:pH Electrode (Made in UK), ORP Electrode, pH Buffers, Temperature Probe, Power Adapter SELON922 ...